WPF提示窗口限时关闭（消息框超时）

 XAML代码

<Window x:Class="WpfApplication1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <StackPanel>
            <TextBox Name="txtName" Height="30" />
            <Button Click="Button_Click_1" Height="30" Content="添加" />
        </StackPanel>
    </Grid>
</Window>

 C#代码

namespace WpfApplication1
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }
        //使用Dlllmport 需要引用 using System.Runtime.InteropServices;
        [DllImport("user32.dll")]
        public static extern int MessageBoxTimeoutA(IntPtr hWnd, string msg, string Caps, int type, int Id, int time);

        private void Button_Click_1(object sender, RoutedEventArgs e)
        {
            if (string.IsNullOrEmpty(txtName.Text))
            {
                //错误提示框，定时自动关闭。
                MessageBoxTimeoutA((IntPtr)0, "请输入商品名称！！！！！！", "提示框", 0, 0, 1000);
                return;
            }
        }
    }
}